Mathias geng



(No Model.)

M. GENG.

RAILWAY CHAIR. No. 458,230. Patented Aug. 25, 1891'.

ii mi KT! $0., Wm, WABMIMON, D- C.

UNITED STATES PATENT OFFICE.-

MATHIAS GENG, OF COLOGNE, PRUSSIA, ASSIGNOR TO GEBRUDER HILGEN- BERG, OFESSEN ON THE RUHR, GERMANY.

RAILWAY-CHAIR.

SPECIFICATION forming part of Letters Patent No. 458,23O, dated August25, 1891..

Application filed May 12, 1891. Serial No. 392,423. (No model.)

To all whom it may concern.-

Be it known that I, MATHIAS GENG, a subject of the King of Prussia,residing at C0- logne on the Rhine, Prussia, German Empire, haveinvented new and useful Improvements in Railway-Chairs, of which thefollowing is a specification.

This invention relates to an improved construction of chair or fasteningfor flanged railway-rails in which the rails are secured in position bymeans of keys or dogs having serrated surfaces, into which takecorrespon dingly-serrated surfaces on locking-plates, such fasteningbeing applicable to all kinds of flanged rails, whether used with woodenor with iron sleepers.

The construction of such chair-fastening will be readily understood byreference to the accompanying drawings, in which- Figure 1 shows a frontview of the chai r-fastening; Fig. 2, a cross-section; Fig. 3, a plan ofthe arrangement for Wooden sleepers; Fig. 1, aplan of the arrangementfor iron sleepers. Fig. 5 shows a general front view on a smaller scalefor wooden sleepers, and Fig. 6 the sam for iron sleepers.

The chair-fastenin g consists of five separate parts, namely: first, thechair proper A; second, the two toothed keys or dogs B, and, third, thetwo toothed locking-plates C.

The chair A is either of rolled iron or steel or of a steel casting andis of rectangular form in plan, while in cross-section its bedplate isof a tapering or wedge shape, on which are four projecting ribs R R R Rthat are slotted for the reception of the keys. The four ribs formbetween them three troughlike spaces, of which the greater (middle) oneis intended to receive the rail, while the two smaller side ones receivethe two toothed locking-plates C O. The surfaces of the bedplates of thetwo opposite chairs are so inclined toward each other that when fixedupon fiat sleepers the rails have the requisite inward cant imparted tothem thereby. The length of the chair in the direction of the rail is,as a rule, made greater for wooden sleepers than for iron ones, as shownin Figs. 3 and 4. The width of the middle trough is made so as to suitthe widest flanged rail that may be used and to allow of the greatestvariation in gage that may be required. The other dimensions are made inproportion to the required strength and practical construction of thechair.

The toothed keys or dogs B are formed of rolled metal of rectangularcross section and consist of a toothed rack terminating at each end inrounded bearing-heads of unequal length, the keys being capable of beingreversed in position. The difference in length of the two heads isexactly equal to half the pitch of the teeth or the width of a tooth,and this difference, in combination with the reversible arran gement,has forits object to enable the keys 6; B to be adjusted to the extentof half the pitch of the teeth. The thickness of the teeth can besuitably made equal to four millimeters, and consequently the pitcheight millimeters. The sectional dimensions of the keys are madeproportionate to their length and to the required strength. The hollowof the head which comes in contact with the rail is shaped to suit theparticular rail to which it is applied. This is the only part of thechairfastening which requires. to be specially adapted to a particularrail.

The toothed locking-plates C are formed by rolling or pressing. They arein the form of a slightly-curved toothed rack, which termi- 8o nates atone side in a tooth and at the other 'sidein a plain space, so that therack is unsymmetrical to the extent of one-fourth of the pitch. Thewidth of the toothed plate is less to the extent of one-half thethickness of a tooth than the width of the corresponding trough of thechair. The toothed plate consequently has a corresponding amount ofplay, so that the key B is capable of having its position relativethereto varied at will.

The teeth of the plate Oare rounded at both ends thereof, so as tofacilitate their entrance into the teeth of the key B. Their length issuitably made about thirty millimeters greater than the width of thekey.

When applying the above-described chain fastening, the chair A is firstfixed to the sleeper, in the case of wooden sleepers, by means of strongwood-screws H H, Fig. 3, and in the case of iron sleepers by two rivetsN 100 N, Fig. 4, such screws or rivets being situated in the two sidetroughs in diagonal positions,

near the opposite sides of the keys B, which are also placed diagonally.The rail having been placed in correct position as to gage in themiddletrough, the outer key B is first placed in position with its one headbearing against the rail-flange, the direction in which itsunsymmetrical heads are placed being so chosen that a greater or smallerportion of a tooth shall appear against the inner side of the outer ribR. The plate-layer will see at once that if any considerable portion ofa tooth projects the toothed locking-plate C will have to be introducedwith that side presented toward the said rib on which the half-space issituated. The locking-plate is now driven in its curvature in thedirection of its length, afiording a certain amount of spring action, sothat it will be more or less flattened down as it is driven in, and inconsequence of the considerable pressure and frictional resistanceexerted thereby, both against the key B and the chair A, it will besecurely fixed in position, and in taking by means of its teeth anyoutward thrust exerted by the foot of the rail upon the key B it willtransfer that thrust to the chair and sleeper.

The forcing back of the locking-plate or the removal of the rail iseffected by means of a claw-shaped crow-bar.

\Vith regard to the adjustment of the gage, it will be seen that withinthe above-indicated limits every desired gage can be fixed with thegreatest accuracy, and will remain so fixed as long as the horizontalthrust of the rail does not exceed the considerable frictionalresistance ofiered by the locking-plate, while in the event of thisresistance being exceeded a widening of the gage to at most twomillimeters can take place, namely until the locking-plate is made toabut with its outer edge against the side of the outer rib of the chair.

The above-described chair-fastening comas regards the kind of sleepersand rails em-' ployed. It also enables trials to be made with a mixedsystem of wood and iron transverse sleepers.

This improved chair-fastening therefore not only has for its object animprovement in the fastening of rails, but also a far-reachingsimplification and further development of the whole system of permanentway with transverse sleepers.

Having now fully described and ascertained the nature of my invention, Inow declare that what I claim is- A chair-fastening for flangedrailway-rails, applicable eitherwith wooden or metal sleepers,consisting of the combination of a chair, such as A, having two ribs R Rand R R on each side of the rail, two toothed keys or dogs B B passingthrough slots in the said ribs, so as to bear with their hollow ed headsagainst the flange of the rail, and two toothed locking-plates O O,which are driven in between the keys and the chair-bottom when theformer have been adjusted in position, so as to securely lock themagainst lateral displacement, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MATHIAS GENG.

\Vitnesses:

CARL CRUN, HUB HILGENBERG.

